学术期刊引文不规范问题及对策分析

当今，学术界的引文不规范行为十分严重。针对于此，本文主要概括了引文不规范行为的分类、原因和解决对策，强调引文在科技论文中的重要作用，并从作者自身、期刊社和相关法律制度三个方面解决该问题。     

物质生态批评视角下《瓦尔登湖》再解读

亨利·戴维·梭罗是美国最伟大的自然散文作家和环境主义先驱。《瓦尔登湖》是梭罗所著的一本著名的散文集。在该作品中，非人类自然的施事能力和叙事能力得到了充分体现。梭罗在肯定非人类自然与人类具有平等地位的同时，看到了其施事能力带来的影响，读懂了其叙事语言，从而向我们展示了非人类自然通过何种途径显示自身在大自然中不可替代的地位。     

HT公司绩效评价体系存在问题及解决对策

本文基于HT公司的生产管理特点,首先从绩效目标制定的程序不科学、考核周期太长、绩效评价方法不完善等六方面分析了HT公司绩效评价存在的问题;其次从成立绩效考评委员会、建立以绩效为导向的企业文化、明确员工的职业发展道路等五个方面提出解决对策。     

高质量发展背景下江阴市科技创新现状、问题及对策研究

县域是实施创新驱动的重要基础，以江阴市为例，对照《江阴市“十三五”科技创新发展规划》，对江阴市创新驱动实施情况及存在的问题进行分析，并提出对策建议，从而为全国县域创新发展提供思路和启示。     

REAL OPTIONS WITH COMPETITION AND REGIME SWITCHING

In this paper, we examine irreversible investment decisions in duopoly games with a variable economic climate. Integrating timing flexibility, competition, and changes in the economic environment in the form of a cash flow process with regime switching, the problem is formulated as a stopping‐time game under Stackelberg leader‐follower competition, in which both players determine their respective optimal market entry time. By extending the variational inequality approach, we solve for the free boundaries and obtain optimal investment strategies for each player. Despite the lack of regularity in the leader's obstacle and the cash flow regime uncertainty, the regime‐dependent optimal policies for both the leader and the follower are obtained. In addition, we perform comprehensive numerical experiments to demonstrate the properties of solutions and to gain insights into the implications of regime switching.     

高校考试管理中存在的问题及对策探讨

对当前高校考试管理工作中存在的主要问题进行分析和研究,并提出相应对策,使考试管理更为科学有效,从而为教学质量的提高提供保障。     

Container drayage problem with flexible orders and its near real-time solution strategies

This article studies a container drayage problem with flexible orders defined by using requiring and releasing attributes as a unified formulation of various order types. A determined-activities-on-vertex (DAOV) graph introduces a temporary vertex set to formulate different truck statuses. The problem is formulated as a mixed-integer nonlinear programming model based on the DAOV graph. Four strategies including a window partition based (WPB) strategy are presented and evaluated extensively to solve the problem. Results indicate that the WPB method could solve the problem effectively and efficiently. Furthermore, this method is robust considering the operating time biases compared to other algorithms.     

Sustainable hub location under mixed uncertainty

This paper addresses a novel sustainable hub location problem (SHLP) in which two new environmental-based cost functions accounting for air and noise pollution of vehicles are incorporated. To cope with uncertain data incorporated in the model, a mixed possibilistic–stochastic programming approach is proposed to construct the crisp counterpart. A simulated annealing (SA) and an imperialist competitive algorithm (ICA) with a new solution representation are developed to solve real-sized instances whose performances are compared with a proposed lower bound. Finally, some computational experiments are provided to demonstrate the effectiveness of the proposed model and solution approaches.     

The generalized lock scheduling problem: An exact approach

The present paper introduces an integrated approach to solving the generalized lock scheduling problem. Three interrelated sub problems can be discerned: ship placement, chamber assignment and lockage operation scheduling. In their turn, these are closely related to the 2D bin packing problem, the assignment problem and the (parallel) machine scheduling problem respectively. In previous research, the three sub problems mentioned were considered separately, often using (heuristic) interaction between them to obtain better solutions. A mixed integer linear programming model is presented and applied to instances from both inland locks and locks in a tide independent port. The experiments show that small instances incorporating a wide range of real-life constraints can be solved to optimality.